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二维小波变换
- 关于二维小波变换的程序 [精华] 说明:此算法重在概念,速度并不是很快。因为FOR循环的缘故。此程序从循环矩阵的观点出发,把圆周卷积和快速幅里叶变换建立了联系。实现了分解和无失真重构。它只做了一层分解,即将256x256图形分解成为64x64的四个图形,避免了使用WKEEP()的困惑。主要思想为用小波滤波器族构造正交阵W,变换写为B=W*A*W ,反变换为:A=W *A*W,这与所有正交变换无异。W为循环正交矩阵,因此可用FFT实现快速运算,难点就在重构矩阵上。若用矩阵概念明确,一个
terrain1.0
- 一个采用小波变换在视频处理中的应用,希望能给大家点帮助-a wavelet transform in video processing applications, we hope that they will help point
5961138972006928223402599535
- 小波软阈值去噪soft harr.rar 小波软阈值去噪soft harr.rar 将文件所在目录设为工作目录,然后打开wavlet.fig,在noise提示框下输入噪声强度,在0-0.1之间(不能为零)。然后点process按钮,就会显示实验结果,包括原图像,加噪图像,去噪图像的对比以及当前的psnr值。 wavlet.m是程序文件。-wavelet soft thresholding wavelet soft harr.rar soft thresholding soft harr.r ar
WaveletImgCompress
- AppWizard has created this 小波变换 application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application. This file contains a summary of what
foveate
- creates foveated image based on Gaussian multiresolution pyramid. Uses formula from Geisler and Perry (1998) to determine spatial dropoff around a point of gaze-creates foveated image based on Gaussian multiresolution pyramid. Uses formula from Geis
MedCosmCGHMaker_13
- 数字全息和计算程式 计算全息图的制作和再现过程主要分为以下几个步骤: 1抽样。得到物体或波面在离散样点上的值。 2.计算。计算物光波在全息平面上的光场分布。 3.编码。把全息平面上光波的复振幅分布编码成全息图的透过率变化。 4.成图。在计算机控制下,将全息图的透过率变化在成图设备上成图。如果成图设备分辨率不够,再经光学缩版得到实用的全息图。 5.再现。这—步骤在本质上与光学全息图的再现没有区别。 -Digital Holography and CGH fo
WaveletDSP
- 小波变换具有良好的时—频局部性,是分析奇异信号的重要方法定点DSP在工程中的厘用士分背通,具实现小波变换可以满足工程是实时性的要求文中简要介绍了小波变换理论及算法,并结合TI公司的16位定点说明算法的实现。 -Wavelet transform has a good time- frequency localization, is to analyze the singular signal an important means of fixed-point DSP in engineeri
JPEG2000_9_7_002.pdf
- 基于实数的二进制表示法,把CDF(Cohen,Daubechies and Feauveau)9/7双正交小波基的提升系数化为二进制,采用简单的移位一加操作代替结构复杂的浮点乘法器,从而实现了JPEG2000中9/7离散小波变换的定点计算.相对于浮点计算法,移位一加操作最大的优点是计算简单,特别易于超大规模集成电路实现,因而使硬件实时处理图像信号成为可能.实验仿真结果表明:在低压缩比的情况下,用移位一加操作重构的图像,其峰值信噪比(PSNR)只比浮点法低0.10 dB,当压缩比增大时,其PSNR
floatwt97
- 97浮点一次小波变换,注意变换中的边界扩展问题-A 97-point wavelet transform, transform Note the expansion of the boundary problem
Wavelets
- power point for wavelet
LENGQIANG
- 面几章介绍了加细方程,多分辨分析(MRA)和离散小波变换(DWT)的基本思想,和基本函数的一些基本性质,如:逼近阶,矩量和点值。-Chapters describes the surface refinement equation, multiresolution analysis (MRA) and the discrete wavelet transform (DWT) of the basic idea, and some basic properties of the basic fun
z3
- 文章介绍了小波变换方法、原理,在故障诊断中的应用,介绍对故障特量的提取,诊断故障奇异点-This paper introduces the wavelet transform method, principle, application in fault diagnosis, introduction to special volume of the extraction of fault diagnosis of singular point of failure
median-filter
- 采取了中值滤波,极大值取点线性插值,一元等距拉格日插值,以及合并滤波等算法将所有的干扰数据滤去-Taken a median filter, with the maximum take-point linear interpolation, one dollar at equidistant Lagrange interpolation, and the combined filtering algorithm will filter out all interference data
Eliminate-singularity
- 该程序是用小波变换对信号进行重构,从而对信号的突变部分即奇异点进行处理,再进行滤波,得到的信号要稳定许多。-The program is using wavelet transform for signal reconstruction, thus mutations in the signal processing part of the singular point, and then filtering the resulting signal to stabilize much.
Matlab
- Matlab小波变换对于奇异点的检测,原始信号是含有奇异点的信号,为确定该奇异点的时间,采用haar小波进行连续小波变换后,在对系数进行分析处理。-Matlab wavelet transform to singular point detection, the original signal is containing the singularity of the signal, to determine the singular point time, adopting haar wavel
Wavelet-learning-materials
- 从数学的角度讲,小波是构造函数空间正交基的基本单元,是在能量有限空间L2(R) 上满足允许条件的函数,这样认识小波需要L2(R) 空间的基础知识,特别是内积空间中空间分解、函数变换等的基础知识。 从信号处理的角度讲,小波(变换)是强有力的时频分析(处理)工具,是在克服傅立叶变换缺点的基础上发展而来的,所以从信号处理的角度认识小波,需要傅立叶变换、傅立叶级数、滤波器等的基础知识。-From the mathematical point of view, is to construct a
Daubechies-wavelet
- 实现构造小波基,求解小波尺度函数离散整数点的值以及实现尺度函数经伸缩后的离散值等功能。-Implement the constructor wavelet basis functions to solve the discrete wavelet scale and the realization of the value of an integer point scale after scaling function by a discrete value functions.
jizhi
- 1班第13组(兰金荣、洪炜冬)求极值点作业,各种图像-Class 1 of 13 (LanJinRong, HongHui winter) for extreme value point homework, all kinds of images
Gradient-progress-bar
- 用razie包中的TRzBackground实现的渐变进度条,通过RGB的控制,试他不会因为在颜色临界点的时候,突然改变颜色-With razie package TRzBackground achieve gradual progress bar, through the RGB control, he will not test the critical point when the color suddenly change color
Code
- Applying auto-correlation after the discrete wavelet transformation based on TEO.Mainly used in the speech processing and end point detection